Following from my presentation of renunciation (radical letting go) through the 'four mind-changings', we will now be introduced to the importance, pre-requisites, nature, and practice of finding luminous stillness and bliss through shamatha (calm abiding). This essential building block of the Dhamma is recognised across all Buddhist traditions, from Theravada to Chan to Vajrayana. Within the context of renunciation, we unlearn our habitual coarse afflictions that sabotage our happiness in this life. More than that, we learn to see that our attachment to sensory and conceptual stimuli prevent us from experiencing the natural bliss, clarity, and non-conceptuality of the deeply tranquil, unified mind. Beyond that, one needs to understand that even such deep blissful calm is only a stepping stone to insight and wisdom that cuts through illusion. That said, without calm abiding, consciousness lacks the capacity to see the truth in a way that will set us free. Thus, the importance of clearly knowing, applying, and accomplishing the path of calm abiding, as we grow in the Dhamma. We traverse this path of calm along nine stages of mental abiding leading to shamatha, and beyond through subsequent stages of mental unification called jhana (Pali) or dhyana (Sanskrit).